Adds spaces in variables after {{ and before }}

Fixes various warnings in Travis CI 

[EXTRA0001] Variables should have spaces after {{ and before }}

roles/moodle/tasks/main.yml

@@ -106,7 +106,7 @@
   become_user: postgres
 
 - name: Put a startup install script in place
-  template: dest={{moodle_base}}
+  template: dest={{ moodle_base }}
             src=moodle_installer
             mode=0755